Low-Pass Lockscreen

This is a two part configuration for locking your screen with i3lock.

The Image procedure

First, a screenshot of the display(s) is made. This screenshot is then read and fouriertransformed. The result is stripped of its higher frequencies and the result then passed through a reverse fourier pipeline. On the tested Setups (2160x1200, Full-HD and 1600x800) the result was unreadable yet still, somehow, representing the original content.

The lockscreen script

Captures the image executes the python script on that image and runs i3lock with that.

The python script

Does the math with the picture

Usage

Clone the repository

mkdir -p $XDG_CONFIG_HOME/i3/scripts/
git checkout https://github.com/madonius/i3-fourier-lockscreen.git
cp fourier.py lockscreen.sh $XDG_CONFIG_HOME/i3/scripts/

Edit your configuration file and add

# lock the screen
bindsym $mod+i exec $XDG_CONFIG_HOME/i3/scripts/lockscreen.sh

Now you may lock your screen by pressing the modifier key and i

Licence

GPLv3